990009900099 has 64 divisors (see below), whose sum is σ = 1696268636160. Its totient is φ = 564957504000.

The previous prime is 990009900059. The next prime is 990009900101.

990009900099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 990009900099 - 2⁹ = 990009899587 is a prime.

990009900099 is a modest number, since divided by 9900099 gives 99 as remainder.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (990009900059) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1112422 + ... + 1793739.

It is an arithmetic number, because the mean of its divisors is an integer number (26504197440).

Almost surely, 2^990009900099 is an apocalyptic number.

990009900099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

990009900099 is a deficient number, since it is larger than the sum of its proper divisors (706258736061).

990009900099 is a wasteful number, since it uses less digits than its factorization.

990009900099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906249 (or 2906243 counting only the distinct ones).

The product of its (nonzero) digits is 531441, while the sum is 54.

The spelling of 990009900099 in words is "nine hundred ninety billion, nine million, nine hundred thousand, ninety-nine".